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Finding the Fourth Proportional to 170,230.60, 255,345.90 and 81,657.10

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Solution

The fourth proportional to 170,230.60, 255,345.90 and 81,657.10 is: 122,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,230.60 : 255,345.90 = 81,657.10 : x
  2. Step 2: Convert to fraction form
    170,230.60/255,345.90 = 81,657.10/x
  3. Step 3: Cross multiply
    170,230.60x = 255,345.90 × 81,657.10
  4. Step 4: Simplify right side
    170,230.60x = 20,850,805,690.89
  5. Step 5: Solve for x
    x = 20,850,805,690.89/170,230.60
  6. Step 6: Final answer
    x = 122,485.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.